Electrically heated soldering iron



Nov. 3, 1931. J. A. HEINTZELMAN 1,829,929

ELECTRICALLY HEATED SOLDERING IRON Filed Novv 21, 1929 2 Sheets-Sheet 2 JA.Hinizelman flzmmdh v A ifomey Patented Nov. 3, 1931 UNITED STATES JAMES A. HEINTZELMAN, or sUnBnnY ,1 EmvsYLvAnrA ELECTRICALLY HEATED SOLIDERING IRON Application filed November 21, 1929. Serial No. 408,815.

The present invention relates to electrically heated tools and has for its general object the provision of simple, reliable and economical means for electrically heating tools.

More specifically my invention relates to electrically heating soldering irons, wherein a novel structure is incorporated in the tool so as to be capable of convenient and easy operation and the tool embodying a structure wherein the parts may be easily and quickly assembled and disassembled with respect to one another,

"With the above and numerous other objects in view, as will appear as the description proceeds, the invention resides in certain novel features of construction, and in the combination and arrangement of parts as will be hereinafter more fully described and claimed.

In the drawings: V

Figure 1 is an elevation of the soldering iron embodying the features of my invention,

Figure 2 is an enlarged longitudinal section taken substantially on the line 22 of Figure 1, V

Figure 3 is a transverse section taken substantially on the line 3-3 of Figure 2,

Figure 4 is a perspective view of the hollow stem,

Figure 5 is a perspective view of the movable contact arm, and

Figure 6 is a diagrammatic view for illustrating the use of the soldering iron.

Referring to the drawings in detail, it will be seen that the numeral 5 denotes a hollow handle of insulating material having a slot 6 formed in one side thereof adjacent the forward end thereof.

In said forward end of the handle 5 there is a bushing 7 of electrical conducting material to receive one end of a hollow stem 8 also of electrically conducting material and having its outer end enlarged in diameter as indicated at 9 to receive a carbon 10. The hollow stem 8 has a covering 8 of insulating material thereon as shown to advantage in Figures 1 and 2. A plug 11 has fixed to one end thereof a disk 12 from the periphery of which extends laterally a spring contact arm 14 having a curved terminal 15 adjacent which projects from the arm 14 a shank 16 terminating in a head 17.

The plug 11 is partially inserted in the other end of the handle 5 held in place by means of a screw 18 so that the spring arm 14 extends longitudinally of the handle resting in a groove 19 formed interiorly thereof and having the contact 15 terminating in the slot 6 a distance from the bushing 7.

The conductor, such as a wire or the like 21, is secured to an intermediate portion of the arm 14 and extends through a central opening in the disk 12 and thence outwardly of the handle through a bore in the center of 05 the plug 11. The outer end of the wire has a spring clip 22 attached thereto for connecting to one terminal of a battery which we will presume is grounded.

Desiring to solder the element 24 to the frame 25 which is grounded it will be seen that by placing the carbon 10 into engagement with the frame 25 and the element 24 and depressing the head 17 to force the contact 15 in engagement with the bushing 7 that '75 the circuit will be closed thereby setting up sufiicient heat at the carbon for soldering purposes. 1

It is thought that the construction, utility and advantages of this invention will now 30 be quite apparent without a more detailed description thereof.

The present embodiment of the invention has been described in considerable detail merely for the purposes of exemplification since in actual practice it attains the features of advantage enumerated as desirable in the statement of the invention and the above description.

It will be apparent that changes in the details of construction, and in the combination and arrangement of parts may be re- 7 sorted to without departing from the spirit or scope of the invention as hereinafter claimed or sacrificing any of its advantages.

Having thus described my invention, what I claim as new is:

A device of the class described comprising a hollow insulator handle having a bushing inone end thereof, a plug in the other end thereof, a disk on the inner face of the plug, a spring switch arm extending from the disk so that its terminal is normally spaced from the bushing, a circuit Wire extended through the plug and connected to said arm and a depressible button secured to the arm and projecting through a slot in the handle so that the arm may be flexed to engage the terminal with the bushing.

In testimony whereof I afiix my signature.

JAMES A. HEINTZELMAN. 

